Its preamplification circuit is in pure class A; it uses Tung-Sol ECC803s tubes: sound is warm, deep, dynamic.
Final Mosfet stage in class AB is strongly polarized in class A; its great power both at 8 and 4 Ohms makes Kratos able to drive any loudspeaker.

Design is inspired by Logos, the great Pathos’ historic product. But this is a simple aesthetic affinity: similarities stops here. Kratos hides new technical solutions which make it the leading-edge-product between non-InPol amplifiers.
Kratos’ basic features (5 RCA, 2 balanced XLR, digital display, remote-controlled 

Specification

Type : Hybrid stereo amplifier, fully balanced. Preamplifier stage: tubes, class A, 2 x TungSol ECC803S
Final stage: Mosfet, bridge configuration, class AB
Output Power : 2 x 200WRMS @ 8 Ω, 2 x 350WRMS @ 4 Ω
Max input voltage : 5V RMS
Input sensitivity : 0,7VRMS
Input impedance : 47K
Analogue inputs : 2 balanced XRL line, 5 unbalanced RCA line, 1 balanced XRL direct to the power amp
Outputs : 1 Pre out stereo unbalanced RCA, 1 Pre out stereo Balanced XLR
Headphone Specifications
Output power : 3,3 W @ 16 Ω , 2 W @ 32
MAx output level : 10V RMS
Dimensions : 430mm (D) x 530mm (W) x 195mm (H)
Weight : 40Kg